What gets computed from your CSVs
Open Lots Per-lot acquisition date + USD cost basis
Open Lots Table A3 Initial Value INR (Rule 115 × SBI TTBR)
Txn History Gross sale proceeds for the calendar year (Table A2)
Txn History Dividend / money market income (Table A2)
Txn History NRA withholding (for DTAA foreign tax credit)
Auto-fetched Stock price on Dec 31 + month-ends (yfinance)
Auto-fetched Peak balance during the calendar year (monthly high)
Auto-fetched SBI TTBR rates per acquisition date